1919
The last amendment, which is the 27th Amendment to the United States Constitution, was ratified in 1992.
The twentieth amendment was ratified in 1933.
in the year 1919
1798
1992
The fifth amendment was ratified in 1791.
Ratified in 1919 and went into effect in 1920.
It was ratified in July 28, 1868.
Amendment 2, which grants the right to bear arms, was ratified on December 15, 1791.
1971
1870 (ratified)
Amendment 14 was ratified on July 9, 1868